Fixed broadheads may be provided having main blades connected to a tip and secured within a slot or chamber in the body of the broadhead. Secondary blades may interlock with the main blades inside of a ferrule, thereby forming a fixed broadhead with an advanced and strong retention system. The main blades may be pinned to the tip of the broadhead through blade pins and the secondary blades may interlock with the main blades, thereby improving the strength and precision of the fixed broadhead in its movement toward a target.